Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-5260-1: Samba vulnerabilities

1 February 2022

Several security issues were fixed in Samba.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

Orange Tsai discovered that the Samba vfs_fruit module incorrectly handled
certain memory operations. A remote attacker could use this issue to cause
Samba to crash, resulting in a denial of service, or possibly execute
arbitrary code as root. (CVE-2021-44142)

Michael Hanselmann discovered that Samba incorrectly created directories.
In certain configurations, a remote attacker could possibly create a
directory on the server outside of the shared directory. (CVE-2021-43566)

Kees van Vloten discovered that Samba incorrectly handled certain aliased
SPN checks. A remote attacker could possibly use this issue to impersonate
services. (CVE-2022-0336)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10
Ubuntu 20.04

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

Related notices

  • USN-5260-2: ctdb, samba-testsuite, libsmbclient, samba-dev, libpam-winbind, samba-common, libnss-winbind, registry-tools, samba, samba-vfs-modules, samba-libs, samba-dsdb-modules, samba-common-bin, libparse-pidl-perl, python-samba, libwbclient-dev, libwbclient0, smbclient, libsmbclient-dev, winbind
  • USN-5260-3: ctdb, samba-testsuite, samba-doc, samba-dev, libpam-winbind, samba-common, libnss-winbind, registry-tools, samba, libsmbsharemodes-dev, samba-vfs-modules, smbclient, samba-libs, libsmbsharemodes0, samba-dsdb-modules, samba-common-bin, libparse-pidl-perl, python-samba, libwbclient-dev, libwbclient0, libpam-smbpass, libsmbclient, libsmbclient-dev, winbind